Re: Is it okay on st10?

To further clarify Matt's answer, go to Solid Edge Options -> Helpers. There is a section "Start Part and Sheet Metal documents using this environment". Set this to Ordered. All new files will then default to the Ordered environment.

But I have done everything you already told me.We have created a YouTube video to help you understand.

1. Extend the simple shape of the rectangle.2. Move this rectangular feature to the assembly.3. Save the assembly document.4. Now select the part and press the "Modify" button.5. About three times? Try repeating.

At some point the part will be open synchronously.I am talking about this Youtube Video..

I don't see this as crucial but if You want the part to be a definitively orderd, then creat a small orderd sketch with a point in it and I'm absolutely confident that from then on only ordered mode will be used.

As long as there are only synchronous features and faces SE will intend to go into sync mode I suppose.